Abstract A recirculating aquaculture system (RAS) aims to achieve fish production with negligible discharge into the environment. RASs have been applied for in several countries, but nitrate removal is often a limiting factor increases. In this study, pilot-scale RAS (10 tons of fish/year) was connected water treatment field which consisted denitrifying woodchip bioreactor (9 m × 14 m) filled b...

Hybrid grouper is a variety of that has become increasingly popular in recent years. The development cultured Indonesia utilizing the Recirculating Aquaculture System (RAS) currently underway; nevertheless, fish RAS system continue to struggle with infectious diseases, one which VNN (viral nervous necrosis) infection caused by piscine betanodavirus. purpose this study was know clinical sign, mo...

The effects of various feeding ratios on the growth, body composition, and blood chemistry juvenile mandarin fish Siniperca scherzeri (initial weight 9.6 g) were examined in recirculating freshwater system equipped with 21, 300 L tanks at 20 per tank. triplicate groups seven treatments prepared: 100% (control), 95%, 90%, 85%, 80%, 75%, 70% satiation. feed amount control group was determined by ...